Installation Manual

17
NOTE: Additional fasteners may be used at rear, sides
or through door frame, as desired, to secure furnace to
closet or alcove framing.
Condensate Drainage
WARNING:
The condensate produced by the furnace must
be drained. Do not connect a water supply to the
drainage hose of the furnace.
CAUTION:
Do not install additional traps in the condensate
drain.
• If the furnace is installed in an area where
temperatures fall below freezing, special precautions
must be made for insulating condensate drain lines
that drain to the outdoors. If condensate freezes
in the lines, this will cause improper operation or
damage to the furnace. It is recommended that
all drain lines on the outside of the residence be
wrapped with an industry approved insulation or
material allowed by local code.
• Before routing the drain tube out of the furnace, loosen
the tube clamp and turn the tube so the preset 90° turn
faces the intended direction of exit from the cabinet. Do
not route the drain tube without rotating the tube first.
This will kink the tube and prevent condensate from
draining.
• Care should be taken to route the drain line away from
the burner box. Drain lines resting on the burner box
can become kinked or collapsed due to the heat from
the burner box.
• The condensate drain may exit through the left or right
slots in the bottom of the furnace(Figure 17). Make sure
the flexible drain hose is not kinked.
• The condensate should drain from the plastic collector
box as droplets or a small stream. If you notice the
furnace has operated for more than 5 minutes without
draining or the status lights on the control board indicate
an open pressure switch as listed in Table 6, (page
27), follow the steps below.
1. Remove the collector box soft tube (Figure 17) and
verify the exit from the collector box is clear of any
debris or obstructions.
2. Replace this tube and verify the fit to the header spout
is air tight. Air will be drawn into the header if this
connection is not tight.
3. Check other tube connections along the drain system.
Verify that all are air tight.
Figure 16. Cabinet Furnace on Supply Air Duct
MTG. PLATE TABS
SLIDE FURNACE
ALL THE WAY BACK
ONTO MTG. PLATE
SUPPLY AIR DUCT
Knockout Over Holes
SECURE FURNACE WITH
2 FASTENERS IN FRONT
J-Trap
Drain Pipe Routed
thru Slot in Cabinet
To External Drain
Inline Drain
Assembly
Collector
Box Drain
Collector
Box Drain
Figure 17. Condensate Drainage